Stock material or miscellaneous articles – Circular sheet or circular blank
Reexamination Certificate
2007-11-29
2010-11-16
Mulvaney, Elizabeth (Department: 1785)
Stock material or miscellaneous articles
Circular sheet or circular blank
C428S064400, C430S270110
Reexamination Certificate
active
07833604
ABSTRACT:
An Ag alloy reflective layer for optical information recording medium having excellent environmental resistance, an optical information recording medium having such Ag alloy reflective layer, and the like are provided. This Ag alloy reflective layer for an optical information includes 0.1 to 5 atomic % in total of at least one element selected from W, Ti, V, Mn, Zr, Cr, and Ni; 0.005 to 1 atomic % of Bi; and the residue of Ag and inevitable impurities. As a consequence, this Ag alloy reflective layer has improved environmental resistance including the light resistance for the light beam of particular wavelength and resistance to moist heat under particular set of conditions.
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Fujii Hideo
Ohwaki Takeshi
Tsubota Takayuki
(Kobe Steel, Ltd.)
Mulvaney Elizabeth
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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